MJ smoke contains tar and carbon-monoxide and 108 other chemicals. Get a vaporizer if your concerned about health issues and want to continue using for a long time. A water pipe won't actually help filter out the harmful stuff. Check out the MAPS/NORML study on vaporizers and water pipes. Surprisingly, water pipes can be more harmful than joints. I can finally breath easy after 17 years of smoking....thanks to the vape!